deploy/go_trigger.json

{
  "id": "5a2c9e25-a71a-4adf-a785-76c3eca2ac8a",
  "description": "Go repository release trigger for x/playground",
  "github": {
    "name": "go",
    "owner": "golang",
    "push": {
      "tag": "^go[0-9](\\.[0-9]+)+$"
    }
  },
  "build": {
    "steps": [
      {
        "name": "gcr.io/cloud-builders/git",
        "args": [
          "clone",
          "--depth",
          "1",
          "https://go.googlesource.com/playground"
        ]
      },
      {
        "dir": "playground",
        "name": "gcr.io/cloud-builders/gcloud",
        "args": [
          "builds",
          "submit",
          "--async",
          "--config",
          "deploy/deploy.json",
          "."
        ]
      }
    ]
  }
}